Mountable electronic device holder



FIG. 1 is a front perspective view of a mountable electronic device holder;

FIG. 2 is a rear perspective view of the mountable electronic device holder of FIG. 1;

FIG. 3 is a front view of the mountable electronic device holder of FIG. 1;

FIG. 4 is a rear view of the mountable electronic device holder of FIG. 1;

FIG. 5 is a left view of the mountable electronic device holder of FIG. 1;

FIG. 6 is a right view of the mountable electronic device holder of FIG. 1;

FIG. 7 is a top view of the mountable electronic device holder of FIG. 1; and,

FIG. 8 is a bottom view of the mountable electronic device holder of FIG. 1. 

CLAIM The ornamental design for a mountable electronic device holder, as shown and described. 